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[PATCH] Enable the IceCube/lite5200 variants to pass a device tree to Linux.

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This patch adds the code and configuration necessary to boot with an
arch/powerpc Linux kernel.

Signed-off-by: Grant Likely <grant.likely@gmail.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
This commit is contained in:
Stefan Roese 2006-11-28 17:55:49 +01:00
parent e732faec95
commit e59581c56a
3 changed files with 53 additions and 0 deletions
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12
board/icecube/icecube.c
View File

@ -29,6 +29,10 @@
#include <pci.h>
#include <asm/processor.h>
#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
#endif
#if defined(CONFIG_LITE5200B)
#include "mt46v32m16.h"
#else
@ -332,3 +336,11 @@ void ide_set_reset (int idereset)
}
}
#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
#if defined(CONFIG_OF_FLAT_TREE) && defined(CONFIG_OF_BOARD_SETUP)
void
ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
}
#endif

28
cpu/mpc5xxx/cpu.c
View File

@ -31,6 +31,10 @@
#include <mpc5xxx.h>
#include <asm/processor.h>
#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
int checkcpu (void)
@ -102,3 +106,27 @@ unsigned long get_tbclk (void)
}
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_OF_FLAT_TREE
void
ft_cpu_setup(void *blob, bd_t *bd)
{
u32 *p;
ulong clock;
int len;
clock = bd->bi_busfreq;
p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
if (p != NULL)
*p = cpu_to_be32(clock);
p = ft_get_prop(blob, "/" OF_SOC "/bus-frequency", &len);
if (p != NULL)
*p = cpu_to_be32(clock);
p = ft_get_prop(blob, "/" OF_SOC "/ethernet@3000/mac-address", &len);
if (p != NULL)
memcpy(p, bd->bi_enetaddr, 6);
}
#endif

13
include/configs/IceCube.h
View File

@ -172,6 +172,19 @@
#undef CFG_IPBSPEED_133 /* define for 133MHz speed */
#endif
#endif /* CONFIG_MPC5200 */
/* pass open firmware flat tree */
#define CONFIG_OF_FLAT_TREE 1
#define CONFIG_OF_BOARD_SETUP 1
/* maximum size of the flat tree (8K) */
#define OF_FLAT_TREE_MAX_SIZE 8192
#define OF_CPU "PowerPC,5200@0"
#define OF_SOC "soc5200@f0000000"
#define OF_TBCLK (bd->bi_busfreq / 8)
#define OF_STDOUT_PATH "/soc5200@f0000000/serial@2000"
/*
* I2C configuration
*/